Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
1100300severely pollutedexcellent11excellent
100040goodexcellent11excellent
09009excellentexcellent11excellent
08007excellentexcellent11excellent
07006excellentexcellent11excellent
06006excellentexcellent11excellent
05007excellentexcellent11excellent
04006excellentexcellent11excellent
03008excellentexcellent11excellent
02007excellentexcellent21excellent
01007excellentexcellent11excellent
00006excellentexcellent11excellent
23007excellentexcellent11excellent
22004excellentexcellent11excellent
21004excellentexcellent11excellent
20003excellentexcellent11excellent
190019excellentexcellent11excellent
18003excellentexcellent11excellent
17004excellentexcellent11excellent
16005excellentexcellent11excellent
150032goodexcellent11excellent
14006excellentexcellent11excellent
130011excellentexcellent11excellent
120014excellentexcellent11excellent